1·In order to measure ballistic trajectory accurately, the measurement precision of the photoelectric theodolite should be investigated.
为了保证外弹道的测量精度，就应对光电经纬仪的测量精度进行合理设计。
2·The aerodynamic shape of projectiles strongly influences their performance on ballistic trajectory.
弹丸的气动外形对其外弹道性能有重要的影响。
3·Measurement error from the photoelectric theodolite is the main error in the ballistic trajectory measurement.
光电经纬仪测量元素误差是外弹道测量中最主要的误差源。
4·Under the usual coordinates, the paper conclude mathematical model in space motion and design project ballistic trajectory.
在常用坐标系下，推导了空间运动的数学模型，设计了方案飞行弹道。
5·During the initial flight phase, the method which regulates the ballistic trajectory to reduce the overload requirement of the flight middle phase using the direct force is presented.
在飞行初段，提出用直接力来对弹道进行调姿以减小中制导段需用过载的方案，并利用最优控制的方法设计了直接力作用方案。